28417143 has 8 divisors (see below), whose sum is σ = 38141056. Its totient is φ = 18819000.

The previous prime is 28417117. The next prime is 28417163. The reversal of 28417143 is 34171482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28417143 - 2¹⁴ = 28400759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28417143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28417163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30913 + ... + 31818.

It is an arithmetic number, because the mean of its divisors is an integer number (4767632).

Almost surely, 2^28417143 is an apocalyptic number.

28417143 is a deficient number, since it is larger than the sum of its proper divisors (9723913).

28417143 is a wasteful number, since it uses less digits than its factorization.

28417143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62885.

The product of its digits is 5376, while the sum is 30.

The square root of 28417143 is about 5330.7732084567. The cubic root of 28417143 is about 305.1594364836.

The spelling of 28417143 in words is "twenty-eight million, four hundred seventeen thousand, one hundred forty-three".